Distribution of distructive underflooding in the territory of Ukraine

Problem statement. A technogenic load on the geological environment increases in many times over in the presence of new consruction, reconstruction of the old building, intensive development of the subterranean space, accordingly the geological and hydro-geological conditions are fundamentally changing. So the natural groundwater regime (layered, temperature and hydrogeochemical) gets broken, that frequently results in the appearance or activation of the negative engineering-geological processes and the appearance of the emergencies. Furthermore the economic loss from the display of dangerous processes is enormous. Objective. To make the data analysis of a long-term monitoring of the distructive underflooding on the territory of Ukraine. Conclusion. An assessment of the existent natural and technogenic situation and a forecasting of the changes of engineering-geological conditions is almost impossible without detailed study of the territory. In recent years the number of sites of an existent observation network constantly reduces: from 334 in 1994, 285 in 2000, to 59 in 2016. A shortage of the sites of observation is felt especially in the regions of the intensive technogenic influence is on area the enterprises of mining industry, industrial-urban agglomerations etc. The observational data on these sites would assist in timely reaction on the activation of the distructive underfiooding, instead of liquidation of their consequences. On the territory of Ukraine, the flooded areas amount to 89,062 thousand km2 (14,75 % of the territory), and the number of flooded settlements is 4747 units (Table 1). The last 3-4 years, as a result of meteorological conditions, there is a general tendency to reduce the area of flooding. Therefore the study of the conditions of development, expansion and activation of the dangerous geological processes and also organization to observe them stands in a row of the first-priority and the urgent questions.